import java.util.Objects;

public class Test {
    private static int count=0;
    public static void main(String[] args) throws InterruptedException {

        Object oj=new Object();
        Thread t1=new Thread(()->{
            for (int i = 0; i < 50000; i++) {
                synchronized(oj){
                    count++;
                }
            }
        });

        Thread t2=new Thread(()->{
            for (int i=0;i<50000;i++) {
                synchronized(oj){
                    count++;
                }
            }
        });

        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(count);
    }
}
